The relevance of the article does not raise any doubts, especially in the context of modern consumption of rhenium. Rhenium is an industrial metal that has gained increasing recognition and is widely used not only in Russia but also in foreign countries, mainly in the form of alloys with other elements, imparting special physicochemical properties to alloys based on wolfram and molybdenum. The most popular alloys with the addition of molybdenum and tungsten are recognized. Adding of a minor amount of rhenium reduces the transition temperature of wolfram and molybdenum to the fragile state and at the same time makes it possible to maintain elasticity at high temperatures. The objective of this article is to analyze the demand for rhenium abroad and its production by analyzing the market for mineral raw materials, by studying reports, literary sources, reports of companies for the production and consumption of rhenium, which are leaders in their field of activity. The article presents the results of the analysis of rhenium global production and consumption.

The article contains the research results for a rational mining mode, definitions, and averaging of the operating stripping ratio. When determining the mining mode using open-pit hydraulic excavators, the problem appears with averaging the operating stripping ratio. Averaging is usually achieved by changing the pit wall angle at the expense of the respective change in the bench width. Minimum bench width serves as a limiting factor if working benches have to be reduced during the open pit mining. Continuous mining operations in an open pit require calculation and averaging the operational stripping ratio. There is a classical approach to calculate the average operational stripping ratio, but this method is graphical and has some errors. Therefore, a mathematical simulation was carried out based on integral calculus to obtain more precise values.

No abstract

Replacement 21% Refilling fuel and water tanks 11% Maneuvers 3% Relocations to new production sites 11% Waiting for haul trucks 6% Cutting rocks and loading haul trucks 38% 10%

No abstract